EDMONTON - The mother of one of four RCMP officers murdered more than five years ago in Alberta says she's relieved a date has finally been set for a hearing into what happened.

"Hopefully, there will be some good coming out of the fatality inquiry," said Colleen Myrol, whose son Brock was one of the Mounties gunned down by James Roszko on his property near Mayerthorpe.

Roszko also shot constables Anthony Gordon, Leo Johnston and Peter Schiemann before turning the gun on himself.

The inquiry is to begin Jan. 11 and is expected to last two weeks. Its purpose will be to determine the circumstances of the deaths and look at any lessons learned.

"The inquiry (will not be able) to find any legal responsibility, but what it can do is provide a recommendation list to prevent future incidents," said Kim Misik of Alberta Justice.

Roszko shot the officers in the early morning of March 5, 2005, as they guarded a marijuana grow-op and stolen vehicle chop shop that had been discovered on his land during an investigation into a stolen property complaint. Roszko, camouflaged and heavily armed, stole up on the unsuspecting officers and shot them point-blank.

Only Johnston had a chance to return fire before he, too, was killed.

RCMP procedures leading up to the shootings have already been criticized. Some people have pointed out that Roszko was known to be a violent cop-hater. Police also had reports that he had an automatic rifle on his property, although it wasn't the murder weapon.

Critics say police should have been more security-conscious, perhaps even sending an emergency response team to the site instead of four relatively inexperienced constables.

Two examinations of RCMP decisions prior to the deaths have already been held. In 2007, the force concluded in an internal investigation that Roszko's actions could not have been foreseen. It said leaders at the Mayerthorpe detachment performed reasonably and professionally on the day of the shootings.

That same year, a workplace safety report from Human Resources and Skills Development Canada recommended that beefier body armour be issued to Alberta Mounties. It also suggested that officers working at night be equipped with night-vision goggles and better radio communications.

The deaths have also been examined in court. Two local men, Dennis Cheeseman and Shawn Hennessey, pleaded guilty to manslaughter for their part in helping Roszko. The pair admitted they provided him with one of his guns, gave him a ride to his property knowing he was armed and failed to alert police to the murderous danger stalking the officers over the course of the night.

The trial had to be completed before the inquiry could begin. Hennessey and Cheeseman have asked the Alberta Court of Appeal to reduce their respective 15- and 12-year sentences and the justices are considering their arguments.

"For all intents and purposes, the criminal proceedings have concluded," said Misik.

Fatality inquiries give family members of the deceased a chance to ask questions and make submissions. Myrol said she and her husband will attend an information session next week to learn more about the process before they decide what role they might play.

"I have to find out what they're looking for for the presentation," she said. "Keith and I, if we feel there's something we want to say, we will say it."

A pre-inquiry hearing is to be held Aug. 19 to determine who will speak at the inquiry.

But Myrol, who plans to attend the inquiry whether or not she takes part, says there's no doubt it will be emotionally draining.

"It's hard going through the trial, sitting through all of that," she said. "You think you're moving ahead and some days you are, but any time something like that brings it up, you have to stop and think that your son was murdered.

"And I don't know if that ever will sink in, to be honest."